A&p I Lab Practical

Front 1

Parfocal

Back 1

being able to adjust from one lens to another with little or minimal adjustment.

Front 2

Magnification

Back 2

to increase in size with the use of a lens

Front 3

Resolution

Back 3

ability of a lens system to show fine details of the object

Front 4

Contrast

Back 4

-differences in intensity/color to create image contrast

- difference in light intensity between the image and the adjacent background relative to the overall backround intensity

Front 5

Inversion

Back 5

reversal of an image projected by a microscope

Front 6

Chromatin

Back 6

the combination or complex of DNA and proteins that make up the contents of the nucleus of a cell.

Front 7

Cytokinesis

Back 7

the division of the cytoplasm which begins after Mitosis in nearly complete

Front 8

Centromere

Back 8

part of a chromosome that links sister chromatids. During Mitosis spindle fibers attach to the Centromere.

Front 9

Chromosome

Back 9

a structure of DNA, protein, and RNA found in cells

Front 10

Histology

Back 10

study of tissues

Front 11

Name the objectives, and calculate total magnification using each objective

Back 11

Magnification: 4x , 10x , 40x
Total Magnifications: 40x, 100x, 400x

Front 12

Smooth ER (ER agranular)

Back 12

steroid/lipid synthesis, lipid metabolism, drug detoxification

Front 13

Rough ER (ER granular)

Back 13

make membrane proteins and secretory proteins

Front 14

Ribosomes

Back 14

sites of protein synthesis

Front 15

Polysomes

Back 15

a cluster of ribosomes

Front 16

fat vacuole

Back 16

membranous sac carrying fats

Front 17

Pinocyte vesicle

Back 17

composed at the plasma membrane, absorbs large molecules

Front 18

nucleus

Back 18

the control center of the cell containing RNA and DNA

Front 19

nucleoli

Back 19

A small, typically round granular body composed of protein and RNA in the nucleus of a cell

Front 20

chromatine

Back 20

A complex of nucleic acids and proteins, primarily histones, in the cell nucleus. Condenses to form chromosomes during cell division.

Front 21

lysosomes

Back 21

contain digestive enzymes (hydrolases); digest worn-out cell organelles and foreign substances; if ruptured they could destroy the cell

Front 22

golgi apparatus

Back 22

packages proteins and other substances for transport

Front 23

nuclear membrane (nuclear covering/nuclear envelope)

Back 23

The double-layered membrane enclosing the nucleus of a cell.

Front 24

plasma membrane

Back 24

semipermeable membrane that encloses the cytoplasm of a cell

Front 25

golgi vesicle

Back 25

body that forms by "budding" from the Golgi apparatus. It contains proteins such as digestive enzymes, and migrates to the cell (plasma) membrane for expulsion of material

Front 26

mitochondria

Back 26

power house of cell. makes ATP

Front 27

golgi apparatus

Back 27

membrane-bound sacs (saccules) involved in the storage, modification and secretion of proteins and lipids destined to leave the cell (extracellular) and for use within the cell (intracellular)

Front 28

centrioles

Back 28

direct the formation of the mitotic spindle during cell division

Front 29

The cell cycle

Back 29

prophase
metaphase
anaphase
telophase

Front 30

prophase

Back 30

1) chromatin threads coil and shorten
2) centrioles separate from one another forming mitotic spindles between them that acts like scaffolding
3) chromosomes are now double stranded structures. They attach to the spindle fibers at their centromere and slide along it
3) nucleus breaks down and disappears

Front 31

metaphase

Back 31

-Chromosomes align along the equatorial plane

Front 32

anaphase

Back 32

-centromeres split
-chromatids seperate from one another and move towards opposite ends of the cell

Front 33

telophase

Back 33

-events of prophase are reversed
-chromosomes uncoil and resume chromatin form
-spindles break down and disappear
-a nuclear membrane forms around each chromatin mass